If you have to use foam I would say extremely carefully as you will be surprised at how much it expands, even when you think it has finished it goes again,
Most don’t see expanding foam as acceptable nowadays and in some cases it is being removed for silicon or cement
If you're going for foam, it's definitely worth using a gun grade foam with a gun rather than the type that comes with a 'plastic straw', you get far more control over the flow.
If you're going for foam, it's definitely worth using a gun grade foam with a gun rather than the type that comes with a 'plastic straw', you get far more control over the flow.
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